/*++

Copyright (c) Microsoft Corporation. All rights reserved.

You may only use this code if you agree to the terms of the Windows Research Kernel Source Code License agreement (see License.txt).
If you do not agree to the terms, do not use the code.


Module Name:

    mountmgr.h

Abstract:

    This file defines the external mount point interface for administering
    mount points.

--*/

#ifndef _MOUNTMGR_
#define _MOUNTMGR_

#if _MSC_VER > 1000
#pragma once
#endif

#ifndef FAR
#define FAR
#endif


#define MOUNTMGR_DEVICE_NAME        L"\\Device\\MountPointManager"
#define MOUNTMGR_DOS_DEVICE_NAME    L"\\\\.\\MountPointManager"

#define MOUNTMGRCONTROLTYPE  ((ULONG) 'm')
#define MOUNTDEVCONTROLTYPE  ((ULONG) 'M')

//
// These are the IOCTLs supported by the mount point manager.
//

#define IOCTL_MOUNTMGR_CREATE_POINT                 CTL_CODE(MOUNTMGRCONTROLTYPE, 0, METHOD_BUFFERED, FILE_READ_ACCESS | FILE_WRITE_ACCESS)
#define IOCTL_MOUNTMGR_DELETE_POINTS                CTL_CODE(MOUNTMGRCONTROLTYPE, 1, METHOD_BUFFERED, FILE_READ_ACCESS | FILE_WRITE_ACCESS)
#define IOCTL_MOUNTMGR_QUERY_POINTS                 CTL_CODE(MOUNTMGRCONTROLTYPE, 2, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_MOUNTMGR_DELETE_POINTS_DBONLY         CTL_CODE(MOUNTMGRCONTROLTYPE, 3, METHOD_BUFFERED, FILE_READ_ACCESS | FILE_WRITE_ACCESS)
#define IOCTL_MOUNTMGR_NEXT_DRIVE_LETTER            CTL_CODE(MOUNTMGRCONTROLTYPE, 4, METHOD_BUFFERED, FILE_READ_ACCESS | FILE_WRITE_ACCESS)
#define IOCTL_MOUNTMGR_AUTO_DL_ASSIGNMENTS          CTL_CODE(MOUNTMGRCONTROLTYPE, 5, METHOD_BUFFERED, FILE_READ_ACCESS | FILE_WRITE_ACCESS)
#define IOCTL_MOUNTMGR_VOLUME_MOUNT_POINT_CREATED   CTL_CODE(MOUNTMGRCONTROLTYPE, 6, METHOD_BUFFERED, FILE_READ_ACCESS | FILE_WRITE_ACCESS)
#define IOCTL_MOUNTMGR_VOLUME_MOUNT_POINT_DELETED   CTL_CODE(MOUNTMGRCONTROLTYPE, 7, METHOD_BUFFERED, FILE_READ_ACCESS | FILE_WRITE_ACCESS)
#define IOCTL_MOUNTMGR_CHANGE_NOTIFY                CTL_CODE(MOUNTMGRCONTROLTYPE, 8, METHOD_BUFFERED, FILE_READ_ACCESS)
#define IOCTL_MOUNTMGR_KEEP_LINKS_WHEN_OFFLINE      CTL_CODE(MOUNTMGRCONTROLTYPE, 9, METHOD_BUFFERED, FILE_READ_ACCESS | FILE_WRITE_ACCESS)
#define IOCTL_MOUNTMGR_CHECK_UNPROCESSED_VOLUMES    CTL_CODE(MOUNTMGRCONTROLTYPE, 10, METHOD_BUFFERED, FILE_READ_ACCESS)
#define IOCTL_MOUNTMGR_VOLUME_ARRIVAL_NOTIFICATION  CTL_CODE(MOUNTMGRCONTROLTYPE, 11, METHOD_BUFFERED, FILE_READ_ACCESS)
#define IOCTL_MOUNTMGR_QUERY_DOS_VOLUME_PATH        CTL_CODE(MOUNTMGRCONTROLTYPE, 12, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_MOUNTMGR_QUERY_DOS_VOLUME_PATHS       CTL_CODE(MOUNTMGRCONTROLTYPE, 13, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_MOUNTMGR_SCRUB_REGISTRY               CTL_CODE(MOUNTMGRCONTROLTYPE, 14, METHOD_BUFFERED, FILE_READ_ACCESS | FILE_WRITE_ACCESS)
#define IOCTL_MOUNTMGR_QUERY_AUTO_MOUNT             CTL_CODE(MOUNTMGRCONTROLTYPE, 15, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_MOUNTMGR_SET_AUTO_MOUNT               CTL_CODE(MOUNTMGRCONTROLTYPE, 16, METHOD_BUFFERED, FILE_READ_ACCESS | FILE_WRITE_ACCESS)

//
// Input structure for IOCTL_MOUNTMGR_CREATE_POINT.
//

typedef struct _MOUNTMGR_CREATE_POINT_INPUT {
    USHORT  SymbolicLinkNameOffset;
    USHORT  SymbolicLinkNameLength;
    USHORT  DeviceNameOffset;
    USHORT  DeviceNameLength;
} MOUNTMGR_CREATE_POINT_INPUT, *PMOUNTMGR_CREATE_POINT_INPUT;

//
// Input structure for IOCTL_MOUNTMGR_DELETE_POINTS,
// IOCTL_MOUNTMGR_QUERY_POINTS, and IOCTL_MOUNTMGR_DELETE_POINTS_DBONLY.
//

typedef struct _MOUNTMGR_MOUNT_POINT {
    ULONG   SymbolicLinkNameOffset;
    USHORT  SymbolicLinkNameLength;
    ULONG   UniqueIdOffset;
    USHORT  UniqueIdLength;
    ULONG   DeviceNameOffset;
    USHORT  DeviceNameLength;
} MOUNTMGR_MOUNT_POINT, *PMOUNTMGR_MOUNT_POINT;

//
// Output structure for IOCTL_MOUNTMGR_DELETE_POINTS,
// IOCTL_MOUNTMGR_QUERY_POINTS, and IOCTL_MOUNTMGR_DELETE_POINTS_DBONLY.
//

typedef struct _MOUNTMGR_MOUNT_POINTS {
    ULONG                   Size;
    ULONG                   NumberOfMountPoints;
    MOUNTMGR_MOUNT_POINT    MountPoints[1];
} MOUNTMGR_MOUNT_POINTS, *PMOUNTMGR_MOUNT_POINTS;

//
// Input structure for IOCTL_MOUNTMGR_NEXT_DRIVE_LETTER.
//

typedef struct _MOUNTMGR_DRIVE_LETTER_TARGET {
    USHORT  DeviceNameLength;
    WCHAR   DeviceName[1];
} MOUNTMGR_DRIVE_LETTER_TARGET, *PMOUNTMGR_DRIVE_LETTER_TARGET;

//
// Output structure for IOCTL_MOUNTMGR_NEXT_DRIVE_LETTER.
//

typedef struct _MOUNTMGR_DRIVE_LETTER_INFORMATION {
    BOOLEAN DriveLetterWasAssigned;
    UCHAR   CurrentDriveLetter;
} MOUNTMGR_DRIVE_LETTER_INFORMATION, *PMOUNTMGR_DRIVE_LETTER_INFORMATION;

//
// Input structure for IOCTL_MOUNTMGR_VOLUME_MOUNT_POINT_CREATED and
// IOCTL_MOUNTMGR_VOLUME_MOUNT_POINT_DELETED.
//

typedef struct _MOUNTMGR_VOLUME_MOUNT_POINT {
    USHORT  SourceVolumeNameOffset;
    USHORT  SourceVolumeNameLength;
    USHORT  TargetVolumeNameOffset;
    USHORT  TargetVolumeNameLength;
} MOUNTMGR_VOLUME_MOUNT_POINT, *PMOUNTMGR_VOLUME_MOUNT_POINT;

//
// Input structure for IOCTL_MOUNTMGR_CHANGE_NOTIFY.
// Output structure for IOCTL_MOUNTMGR_CHANGE_NOTIFY.
//

typedef struct _MOUNTMGR_CHANGE_NOTIFY_INFO {
    ULONG   EpicNumber;
} MOUNTMGR_CHANGE_NOTIFY_INFO, *PMOUNTMGR_CHANGE_NOTIFY_INFO;

//
// Input structure for IOCTL_MOUNTMGR_KEEP_LINKS_WHEN_OFFLINE,
// IOCTL_MOUNTMGR_VOLUME_ARRIVAL_NOTIFICATION,
// IOCTL_MOUNTMGR_QUERY_DOS_VOLUME_PATH, and
// IOCTL_MOUNTMGR_QUERY_DOS_VOLUME_PATHS.
//

typedef struct _MOUNTMGR_TARGET_NAME {
    USHORT  DeviceNameLength;
    WCHAR   DeviceName[1];
} MOUNTMGR_TARGET_NAME, *PMOUNTMGR_TARGET_NAME;

//
// Output structure for IOCTL_MOUNTMGR_QUERY_DOS_VOLUME_PATH and
// IOCTL_MOUNTMGR_QUERY_DOS_VOLUME_PATHS.
//

typedef struct _MOUNTMGR_VOLUME_PATHS {
    ULONG   MultiSzLength;
    WCHAR   MultiSz[1];
} MOUNTMGR_VOLUME_PATHS, *PMOUNTMGR_VOLUME_PATHS;

//
// Macro that defines what a "drive letter" mount point is.  This macro can
// be used to scan the result from QUERY_POINTS to discover which mount points
// are find "drive letter" mount points.
//

#define MOUNTMGR_IS_DRIVE_LETTER(s) (   \
    (s)->Length == 28 &&                \
    (s)->Buffer[0] == '\\' &&           \
    (s)->Buffer[1] == 'D' &&            \
    (s)->Buffer[2] == 'o' &&            \
    (s)->Buffer[3] == 's' &&            \
    (s)->Buffer[4] == 'D' &&            \
    (s)->Buffer[5] == 'e' &&            \
    (s)->Buffer[6] == 'v' &&            \
    (s)->Buffer[7] == 'i' &&            \
    (s)->Buffer[8] == 'c' &&            \
    (s)->Buffer[9] == 'e' &&            \
    (s)->Buffer[10] == 's' &&           \
    (s)->Buffer[11] == '\\' &&          \
    (s)->Buffer[12] >= 'A' &&           \
    (s)->Buffer[12] <= 'Z' &&           \
    (s)->Buffer[13] == ':')

//
// Macro that defines what a "volume name" mount point is.  This macro can
// be used to scan the result from QUERY_POINTS to discover which mount points
// are "volume name" mount points.
//

#define MOUNTMGR_IS_VOLUME_NAME(s) (                                          \
     ((s)->Length == 96 || ((s)->Length == 98 && (s)->Buffer[48] == '\\')) && \
     (s)->Buffer[0] == '\\' &&                                                \
     ((s)->Buffer[1] == '?' || (s)->Buffer[1] == '\\') &&                     \
     (s)->Buffer[2] == '?' &&                                                 \
     (s)->Buffer[3] == '\\' &&                                                \
     (s)->Buffer[4] == 'V' &&                                                 \
     (s)->Buffer[5] == 'o' &&                                                 \
     (s)->Buffer[6] == 'l' &&                                                 \
     (s)->Buffer[7] == 'u' &&                                                 \
     (s)->Buffer[8] == 'm' &&                                                 \
     (s)->Buffer[9] == 'e' &&                                                 \
     (s)->Buffer[10] == '{' &&                                                \
     (s)->Buffer[19] == '-' &&                                                \
     (s)->Buffer[24] == '-' &&                                                \
     (s)->Buffer[29] == '-' &&                                                \
     (s)->Buffer[34] == '-' &&                                                \
     (s)->Buffer[47] == '}'                                                   \
    )

#define MOUNTMGR_IS_DOS_VOLUME_NAME(s) (    \
     MOUNTMGR_IS_VOLUME_NAME(s) &&          \
     (s)->Length == 96 &&                   \
     (s)->Buffer[1] == '\\'                 \
    )

#define MOUNTMGR_IS_DOS_VOLUME_NAME_WB(s) ( \
     MOUNTMGR_IS_VOLUME_NAME(s) &&          \
     (s)->Length == 98 &&                   \
     (s)->Buffer[1] == '\\'                 \
    )

#define MOUNTMGR_IS_NT_VOLUME_NAME(s) (     \
     MOUNTMGR_IS_VOLUME_NAME(s) &&          \
     (s)->Length == 96 &&                   \
     (s)->Buffer[1] == '?'                  \
    )

#define MOUNTMGR_IS_NT_VOLUME_NAME_WB(s) (  \
     MOUNTMGR_IS_VOLUME_NAME(s) &&          \
     (s)->Length == 98 &&                   \
     (s)->Buffer[1] == '?'                  \
    )

//
// The following IOCTL is supported by mounted devices.
//

#define IOCTL_MOUNTDEV_QUERY_DEVICE_NAME    CTL_CODE(MOUNTDEVCONTROLTYPE, 2, METHOD_BUFFERED, FILE_ANY_ACCESS)

//
// Output structure for IOCTL_MOUNTDEV_QUERY_DEVICE_NAME.
//

typedef struct _MOUNTDEV_NAME {
    USHORT  NameLength;
    WCHAR   Name[1];
} MOUNTDEV_NAME, *PMOUNTDEV_NAME;

//
// Devices that wish to be mounted should report this GUID in
// IoRegisterDeviceInterface.
//

DEFINE_GUID(MOUNTDEV_MOUNTED_DEVICE_GUID, 0x53f5630d, 0xb6bf, 0x11d0, 0x94, 0xf2, 0x00, 0xa0, 0xc9, 0x1e, 0xfb, 0x8b);


//
// Input / Output structure for querying / setting the auto-mount setting
//

typedef enum _MOUNTMGR_AUTO_MOUNT_STATE {
        Disabled = 0,
        Enabled
        } MOUNTMGR_AUTO_MOUNT_STATE;

typedef struct _MOUNTMGR_QUERY_AUTO_MOUNT {
    MOUNTMGR_AUTO_MOUNT_STATE   CurrentState;
    } MOUNTMGR_QUERY_AUTO_MOUNT, *PMOUNTMGR_QUERY_AUTO_MOUNT;

typedef struct _MOUNTMGR_SET_AUTO_MOUNT {
    MOUNTMGR_AUTO_MOUNT_STATE   NewState;
    } MOUNTMGR_SET_AUTO_MOUNT, *PMOUNTMGR_SET_AUTO_MOUNT;

#endif

